EP1641204A3 - Procédé et appareil de réglage d'un filtre tranversal - Google Patents
Procédé et appareil de réglage d'un filtre tranversal Download PDFInfo
- Publication number
- EP1641204A3 EP1641204A3 EP05112254A EP05112254A EP1641204A3 EP 1641204 A3 EP1641204 A3 EP 1641204A3 EP 05112254 A EP05112254 A EP 05112254A EP 05112254 A EP05112254 A EP 05112254A EP 1641204 A3 EP1641204 A3 EP 1641204A3
- Authority
- EP
- European Patent Office
- Prior art keywords
- adaptive filter
- signal
- constructed
- adjustment
- operating mode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 230000003044 adaptive effect Effects 0.000 abstract 4
- 230000005540 biological transmission Effects 0.000 abstract 1
- 230000002452 interceptive effect Effects 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
- H04L25/03006—Arrangements for removing intersymbol interference
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
- H04L25/03006—Arrangements for removing intersymbol interference
- H04L25/03012—Arrangements for removing intersymbol interference operating in the time domain
- H04L25/03019—Arrangements for removing intersymbol interference operating in the time domain adaptive, i.e. capable of adjustment during data reception
- H04L25/03038—Arrangements for removing intersymbol interference operating in the time domain adaptive, i.e. capable of adjustment during data reception with a non-recursive structure
- H04L25/0305—Arrangements for removing intersymbol interference operating in the time domain adaptive, i.e. capable of adjustment during data reception with a non-recursive structure using blind adaptation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
- H04L25/03006—Arrangements for removing intersymbol interference
- H04L2025/03592—Adaptation methods
- H04L2025/03598—Algorithms
- H04L2025/03611—Iterative algorithms
- H04L2025/03617—Time recursive algorithms
- H04L2025/0363—Feature restoration, e.g. constant modulus
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
- H04L25/03006—Arrangements for removing intersymbol interference
- H04L2025/03592—Adaptation methods
- H04L2025/03726—Switching between algorithms
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Filters That Use Time-Delay Elements (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/124,549 US7330068B2 (en) | 2002-04-16 | 2002-04-16 | Adjusting coefficients of a filter |
EP03100786A EP1355463B1 (fr) | 2002-04-16 | 2003-03-26 | Réglage d'un filtre tranversale |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03100786A Division EP1355463B1 (fr) | 2002-04-16 | 2003-03-26 | Réglage d'un filtre tranversale |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1641204A2 EP1641204A2 (fr) | 2006-03-29 |
EP1641204A3 true EP1641204A3 (fr) | 2006-05-24 |
Family
ID=28674694
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03100786A Expired - Fee Related EP1355463B1 (fr) | 2002-04-16 | 2003-03-26 | Réglage d'un filtre tranversale |
EP05112254A Withdrawn EP1641204A3 (fr) | 2002-04-16 | 2003-03-26 | Procédé et appareil de réglage d'un filtre tranversal |
EP05112252A Withdrawn EP1641203A3 (fr) | 2002-04-16 | 2003-03-26 | Procédé de réglage d'un filtre tranversal |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03100786A Expired - Fee Related EP1355463B1 (fr) | 2002-04-16 | 2003-03-26 | Réglage d'un filtre tranversale |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05112252A Withdrawn EP1641203A3 (fr) | 2002-04-16 | 2003-03-26 | Procédé de réglage d'un filtre tranversal |
Country Status (5)
Country | Link |
---|---|
US (2) | US7330068B2 (fr) |
EP (3) | EP1355463B1 (fr) |
JP (1) | JP4519415B2 (fr) |
CN (1) | CN1452365A (fr) |
DE (1) | DE60307712T2 (fr) |
Families Citing this family (69)
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US6724844B1 (en) * | 1998-06-30 | 2004-04-20 | Koninklijke Philips Electronics N.V. | Method and device for improving DFE performance in a trellis-coded system |
US6807405B1 (en) | 1999-04-28 | 2004-10-19 | Isco International, Inc. | Method and a device for maintaining the performance quality of a code-division multiple access system in the presence of narrow band interference |
US9582795B2 (en) | 2002-02-05 | 2017-02-28 | Square, Inc. | Methods of transmitting information from efficient encryption card readers to mobile devices |
US9305314B2 (en) | 2002-02-05 | 2016-04-05 | Square, Inc. | Methods of transmitting information to mobile devices using cost effective card readers |
US9495675B2 (en) | 2002-02-05 | 2016-11-15 | Square, Inc. | Small card reader configured to be coupled to a mobile device |
US9286635B2 (en) | 2002-02-05 | 2016-03-15 | Square, Inc. | Method of transmitting information from efficient communication protocol card readers to mobile devices |
US9916581B2 (en) | 2002-02-05 | 2018-03-13 | Square, Inc. | Back end of payment system associated with financial transactions using card readers coupled to mobile devices |
US8870070B2 (en) | 2010-10-13 | 2014-10-28 | Square, Inc. | Card reader device |
US9324100B2 (en) | 2002-02-05 | 2016-04-26 | Square, Inc. | Card reader with asymmetric spring |
US9262757B2 (en) | 2002-02-05 | 2016-02-16 | Square, Inc. | Method of transmitting information from a card reader with a power supply and wake-up circuit to a mobile device |
US8235287B2 (en) | 2010-10-13 | 2012-08-07 | Square, Inc. | Read head device with slot configured to reduce torque |
US9016572B2 (en) | 2010-10-13 | 2015-04-28 | Square, Inc. | Systems and methods for financial transaction through miniaturized card with ASIC |
US9262777B2 (en) | 2002-02-05 | 2016-02-16 | Square, Inc. | Card reader with power efficient architecture that includes a wake-up circuit |
US9495676B2 (en) | 2002-02-05 | 2016-11-15 | Square, Inc. | Method of transmitting information from a power efficient card to a mobile device |
US9224142B2 (en) | 2002-02-05 | 2015-12-29 | Square, Inc. | Card reader with power efficient architecture that includes a power supply and a wake up circuit |
US8870071B2 (en) | 2010-10-13 | 2014-10-28 | Square, Inc. | Read head device with selected sampling rate |
US8876003B2 (en) | 2010-10-13 | 2014-11-04 | Square, Inc. | Read head device with selected output jack characteristics |
US8573486B2 (en) | 2010-10-13 | 2013-11-05 | Square, Inc. | Systems and methods for financial transaction through miniaturized card reader with confirmation of payment sent to buyer |
US7330068B2 (en) * | 2002-04-16 | 2008-02-12 | Bose Corporation | Adjusting coefficients of a filter |
DE10350700A1 (de) * | 2002-10-31 | 2004-05-19 | Imra Europe S.A.S. | Verbesserungen beim Unterdrücken von Störungen für drahtlosen Empfang und Verbesserungen bei der Verarbeitung eines Frequenzumtastungssignals |
US7599449B2 (en) * | 2006-04-10 | 2009-10-06 | Montage Technology Group, Ltd | Hybrid modulus blind equalization for quadrature amplitude modulation (QAM) receivers |
JP4773294B2 (ja) * | 2006-07-14 | 2011-09-14 | ルネサスエレクトロニクス株式会社 | 適応等化装置及び受信装置 |
US8145976B1 (en) | 2007-05-14 | 2012-03-27 | Marvell International Ltd. | Error correcting |
US7715669B2 (en) * | 2007-10-17 | 2010-05-11 | Avago Technologies Fiber Ip (Singapore) Pte. Ltd. | Fiber optic link, a transceiver for use in the link, and methods for designing and constructing fiber optic links and transceivers |
US8156415B1 (en) | 2007-12-26 | 2012-04-10 | Marvell International Ltd. | Method and system for command queuing in disk drives |
US8374232B2 (en) * | 2008-03-31 | 2013-02-12 | Stmicroelectronics S.A. | Equalizer adapting circuit |
US8370717B1 (en) | 2008-04-08 | 2013-02-05 | Marvell International Ltd. | Method and apparatus for flexible buffers in an XOR engine |
EP2328670B1 (fr) | 2008-08-26 | 2017-04-12 | Huawei Technologies Co., Ltd. | Système et procédé pour communications sans fil |
US7987396B1 (en) * | 2008-09-10 | 2011-07-26 | Marvell International Ltd. | Reducing bit-error rate using adaptive decision feedback equalization |
US8385483B2 (en) | 2008-11-11 | 2013-02-26 | Isco International, Llc | Self-adaptive digital RF bandpass and bandstop filter architecture |
US9436955B2 (en) | 2009-06-10 | 2016-09-06 | Square, Inc. | Methods for transferring funds using a payment service where financial account information is only entered once with a payment service and need not be re-entered for future transfers |
US8584956B2 (en) | 2009-10-13 | 2013-11-19 | Square, Inc. | Systems and methods for passive identification circuitry |
US8675724B2 (en) | 2009-10-20 | 2014-03-18 | Taiwan Semiconductor Manufacturing Company, Ltd. | Decision feedback equalizers and operating methods thereof |
JP5451898B2 (ja) | 2009-12-21 | 2014-03-26 | トムソン ライセンシング | Fm信号に関する自己相関ベースのスペクトル検知 |
US8605830B2 (en) * | 2010-07-30 | 2013-12-10 | National Instruments Corporation | Blind carrier/timing recovery and detection of modulation scheme |
US9619797B2 (en) | 2010-10-13 | 2017-04-11 | Square, Inc. | Payment methods with a payment service and tabs selected by a first party and opened by a second party at an geographic location of the first party's mobile device |
US9454866B2 (en) | 2010-10-13 | 2016-09-27 | Square, Inc. | Method of conducting financial transactions where a payer's financial account information is entered only once with a payment system |
US8826108B1 (en) | 2010-11-03 | 2014-09-02 | Marvell International Ltd. | Pre-scaling soft-decoder inputs |
WO2012089239A1 (fr) * | 2010-12-28 | 2012-07-05 | Telefonaktiebolaget L M Ericsson (Publ) | Traitement de signal pour un récepteur radio à combinaison de diversité |
US9576159B1 (en) | 2011-01-24 | 2017-02-21 | Square, Inc. | Multiple payment card reader system |
JP6003467B2 (ja) * | 2012-09-25 | 2016-10-05 | 株式会社Jvcケンウッド | 無線通信装置、無線通信方法、及び無線通信プログラム |
US9940616B1 (en) | 2013-03-14 | 2018-04-10 | Square, Inc. | Verifying proximity during payment transactions |
US9319916B2 (en) | 2013-03-15 | 2016-04-19 | Isco International, Llc | Method and appartus for signal interference processing |
US8910868B1 (en) | 2013-11-27 | 2014-12-16 | Square, Inc. | Firmware management |
US8967465B1 (en) | 2013-11-27 | 2015-03-03 | Square, Inc. | Audio signaling training for bidirectional communications |
US8931699B1 (en) * | 2013-12-11 | 2015-01-13 | Square, Inc. | Bidirectional audio communication in reader devices |
US9633236B1 (en) | 2013-12-11 | 2017-04-25 | Square, Inc. | Power harvesting in reader devices |
US10198731B1 (en) | 2014-02-18 | 2019-02-05 | Square, Inc. | Performing actions based on the location of mobile device during a card swipe |
US9256769B1 (en) | 2014-02-25 | 2016-02-09 | Square, Inc. | Mobile reader device |
US9668223B2 (en) | 2014-05-05 | 2017-05-30 | Isco International, Llc | Method and apparatus for increasing performance of communication links of communication nodes |
US9569767B1 (en) | 2014-05-06 | 2017-02-14 | Square, Inc. | Fraud protection based on presence indication |
US10026083B1 (en) | 2014-05-11 | 2018-07-17 | Square, Inc. | Tab for a venue |
US10304043B1 (en) | 2014-05-21 | 2019-05-28 | Square, Inc. | Multi-peripheral host device |
USD762651S1 (en) | 2014-06-06 | 2016-08-02 | Square, Inc. | Mobile device case |
US9760740B1 (en) | 2014-06-23 | 2017-09-12 | Square, Inc. | Terminal case with integrated dual reader stack |
US9256770B1 (en) | 2014-07-02 | 2016-02-09 | Square, Inc. | Terminal case with integrated reader and shortened base |
US9799025B2 (en) | 2014-08-19 | 2017-10-24 | Square, Inc. | Energy harvesting bidirectional audio interface |
US9355285B1 (en) | 2015-02-12 | 2016-05-31 | Square, Inc. | Tone-based wake up circuit for card reader |
WO2016178778A1 (fr) | 2015-05-04 | 2016-11-10 | Isco International, Llc | Procédé et appareil pour augmenter les performances de trajets de communication pour des nœuds de communication |
US9436938B1 (en) | 2015-05-13 | 2016-09-06 | Square, Inc. | Transaction payment processing by multiple data centers |
CA3024175C (fr) | 2016-06-01 | 2024-06-11 | Isco International, Llc | Procede et appareil aptes a executer un conditionnement de signal afin d'attenuer une interference detectee dans un systeme de communication |
US10402807B1 (en) | 2017-02-28 | 2019-09-03 | Square, Inc. | Estimating interchange fees for card payments |
US10298279B2 (en) | 2017-04-05 | 2019-05-21 | Isco International, Llc | Method and apparatus for increasing performance of communication paths for communication nodes |
US10284313B2 (en) | 2017-08-09 | 2019-05-07 | Isco International, Llc | Method and apparatus for monitoring, detecting, testing, diagnosing and/or mitigating interference in a communication system |
US10812121B2 (en) | 2017-08-09 | 2020-10-20 | Isco International, Llc | Method and apparatus for detecting and analyzing passive intermodulation interference in a communication system |
US10410021B1 (en) | 2017-12-08 | 2019-09-10 | Square, Inc. | Transaction object reader with digital signal input/output and internal audio-based communication |
US11087301B1 (en) | 2017-12-19 | 2021-08-10 | Square, Inc. | Tamper resistant device |
USD905059S1 (en) | 2018-07-25 | 2020-12-15 | Square, Inc. | Card reader device |
JP7325902B2 (ja) * | 2019-07-04 | 2023-08-15 | 日本無線株式会社 | 判定帰還型等化器および受信機 |
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FR2454732A1 (fr) * | 1979-04-17 | 1980-11-14 | Ibm France | Procede et dispositif pour initialiser un egaliseur adaptatif a partir d'un signal de donnees inconnu dans un systeme de transmission utilisant une modulation a double bande laterale-porteuses en quadrature |
JP2621989B2 (ja) * | 1989-08-08 | 1997-06-18 | 三菱電機株式会社 | フェージング自動等化器 |
US5740206A (en) * | 1991-07-19 | 1998-04-14 | Interdigital Technology Corporation | Adaptive nonlinear equalizer for digital FM signals |
US5267266A (en) * | 1992-05-11 | 1993-11-30 | Bell Communications Research, Inc. | Fast converging adaptive equalizer using pilot adaptive filters |
KR970009687B1 (ko) * | 1993-06-02 | 1997-06-17 | 삼성전자 주식회사 | 디지탈통신을 위한 적응 등화시스템 |
KR0134340B1 (ko) * | 1993-06-02 | 1998-04-27 | 김광호 | 블라인드 등화시스템의 알고리즘제어방법 |
US5697084A (en) * | 1994-09-16 | 1997-12-09 | Bose Corporation | Reducing multipath fading using adaptive filtering |
US5553014A (en) * | 1994-10-31 | 1996-09-03 | Lucent Technologies Inc. | Adaptive finite impulse response filtering method and apparatus |
FR2738967B1 (fr) * | 1995-09-15 | 1997-12-05 | France Telecom | Dispositif d'egalisation adaptatif pour systemes de communications numeriques |
JPH0983602A (ja) * | 1995-09-20 | 1997-03-28 | Taisei Denki Kk | 復調装置 |
US5940440A (en) * | 1996-05-07 | 1999-08-17 | Lucent Technologies Inc. | Generalized multimodulus technique for blind equalization |
JP3625958B2 (ja) * | 1996-06-12 | 2005-03-02 | 松下電器産業株式会社 | データ受信装置 |
US5809074A (en) * | 1996-11-08 | 1998-09-15 | Lucent Technologies Inc. | Technique for improving the blind convergence of an adaptive equalizer using a transition algorithm |
US5710995A (en) | 1997-01-16 | 1998-01-20 | Ford Motor Company | Adaptive antenna receiver |
DE60022569T2 (de) * | 1999-04-05 | 2006-05-18 | Nippon Telegraph And Telephone Corp. | Adaptives Gruppenantennensystem |
US6782036B1 (en) * | 1999-05-26 | 2004-08-24 | Board Of Regents, The University Of Texas System | Smart antenna multiuser detector |
US20030219085A1 (en) * | 2001-12-18 | 2003-11-27 | Endres Thomas J. | Self-initializing decision feedback equalizer with automatic gain control |
US7330068B2 (en) | 2002-04-16 | 2008-02-12 | Bose Corporation | Adjusting coefficients of a filter |
-
2002
- 2002-04-16 US US10/124,549 patent/US7330068B2/en not_active Expired - Fee Related
-
2003
- 2003-03-26 EP EP03100786A patent/EP1355463B1/fr not_active Expired - Fee Related
- 2003-03-26 EP EP05112254A patent/EP1641204A3/fr not_active Withdrawn
- 2003-03-26 EP EP05112252A patent/EP1641203A3/fr not_active Withdrawn
- 2003-03-26 DE DE60307712T patent/DE60307712T2/de not_active Expired - Lifetime
- 2003-04-16 CN CN03123197A patent/CN1452365A/zh active Pending
- 2003-04-16 JP JP2003111250A patent/JP4519415B2/ja not_active Expired - Fee Related
-
2006
- 2006-03-10 US US11/373,540 patent/US7418033B2/en not_active Expired - Fee Related
Non-Patent Citations (2)
Title |
---|
GOOCH R P ET AL INSTITUTE OF ELECTRICAL AND ELECTRONICS ENGINEERS: "PREVENTION OF INTERFERENCE CAPTURE IN A BLIND (CMA-BASED) ADAPTIVE RECEIVE FILTER", PROCEEDINGS OF THE ASILOMAR CONFERENCE ON SIGNALS, SYSTEMS AND COMPUTERS. PACIFIC GROVE, OCT. 30 - NOV. 1, 1989, NEW YORK, IEEE, US, vol. VOL. 2 CONF. 23, 30 October 1989 (1989-10-30), pages 898 - 902, XP000217526 * |
LASTER, J.D. ET AL.: "Interference rejection in digital wireless communications", IEEE SIGNAL PROCESSING MAGAZINE, 1 May 1997 (1997-05-01), pages 37 - 62, XP002374264 * |
Also Published As
Publication number | Publication date |
---|---|
US7330068B2 (en) | 2008-02-12 |
JP4519415B2 (ja) | 2010-08-04 |
EP1641203A2 (fr) | 2006-03-29 |
EP1355463A2 (fr) | 2003-10-22 |
JP2003338780A (ja) | 2003-11-28 |
US20030193366A1 (en) | 2003-10-16 |
US20060152276A1 (en) | 2006-07-13 |
DE60307712T2 (de) | 2006-12-07 |
CN1452365A (zh) | 2003-10-29 |
US7418033B2 (en) | 2008-08-26 |
EP1641204A2 (fr) | 2006-03-29 |
EP1641203A3 (fr) | 2006-05-17 |
EP1355463A3 (fr) | 2004-12-01 |
EP1355463B1 (fr) | 2006-08-23 |
DE60307712D1 (de) | 2006-10-05 |
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